Problem:
While eating sour food or candy, I start to sweat if it's sour enough. My body feels much hotter although my actual temperature is the same, my forehead starts sweating a lot and I feel like it just got twice as hot wherever I am.
Required:
Question 1: Is this a biological phenomenon or is my DNA just stupid?
Question 2: Is it somehow related to the digestive system, that sour food is harder to digest?
Please justify your answers.